@media screen and (color) {}
@media only screen and (color) {}
@media only screen and (min-width: 800px) {}
@media screen and (min-width       :          800px        ) {}
@media screen and (min-width: 800px) and (min-width: 800px) and (min-width: 800px) {}
@media screen and (min-width: 800px) and (min-width: 800px) and (min-width: 800px) and (min-width: 800px){}

